Honeywell HumidIcon™
Digital
Humidity/Temperature
Sensors: HIH6130/6131
and HIH6120/6121 Series
DESCRIPTION (
= competitive differentiator)
Honeywell HumidIcon™ Digital Humidity/Temperature
Sensors: HIH6130/6131 and 6120/6121 Series is a digital
output-type relative humidity (RH) and temperature sensor
combined in the same package. These devices offer several
competitive advantages, including:
Industry-leading long-term stability
Industry-leading Total Error Band
Industry-leading reliability
Lowest total cost solution
2
True temperature-compensated digital I C or SPI output
Energy efficiency
Ultra-small package
Industry-leading long term stability (1.2 %RH over
five years):
Competitive humidity sensors need to go
through a 12 hour at 75 %RH rehydration process
(which requires special equipment chambers) to correct
reflow temperature offset. Honeywell’s sensor also
experiences an offset after reflow; however, it only
requires a five hour rehydration under ambient
conditions (>50 %RH). Honeywell’s industry-leading
long term stability provides the following benefits to the
customer:
Minimizes system performance issues
Helps support system uptime by eliminating the need
to service or replace the sensor during its application
life
Eliminates the need to regularly recalibrate the sensor
in their application, which can be inconvenient and
costly
Industry-leading Total Error Band (TEB) (±5 %RH) (See
Figure 1):
Honeywell specifies Total Error Band—the
most comprehensive, clear, and meaningful measurement
—that provides the sensor’s true accuracy of ±5 %RH
over a compensated range of 5 °C to 50 °C [41 °F to
122 °F] and 10 %RH to 90 %RH. TEB includes all errors
due to:
Humidity non-linearity
Humidity hysteresis
Humidity non-repeatability
Thermal effect on zero
Thermal effect on span
Thermal hysteresis
Figure 1. Total Error Band
Errors
Humidity Non-Linearity
+
Humidity Hysteresis
=
Accuracy
+
Humidity Non-Repeatability
+
Thermal Effect on Zero
=
Total Error Band
+
Thermal Effect on Span
+
Thermal Hysteresis
Total Error Band should not be confused with “Accuracy”,
which is actually a component of Total Error Band. Many
competitors simply specify the accuracy of their device;
however, the specification may exclude hysteresis and
temperature effects, and may be calculated over a very narrow
range, at only one point in the range, or at their absolute best
accuracy level. It is then up to the customer to calibrate the
device to make sure it has the accuracy needed for the life of
the application.
Honeywell’s industry-leading Total Error Band provides the
following benefits to the customer:
Eliminates individually testing and calibrating every sensor,
which can increase their manufacturing time and process
Supports system accuracy and warranty requirements
Helps to optimize system uptime
Provides excellent sensor interchangeability—the customer
can remove one sensor from the tape, remove the next
sensor from the tape, and there is no part-to-part variation
in accuracy
For more information about Total Error Band, please see the
related Technical Note “Explanation of the Total Error Band
Specification for Honeywell’s Digital Humidity/Temperature
Sensors.”
Honeywell HumidIcon™ Digital Humidity/Temperature Sensors
Industry-leading reliability:
Honeywell’s new
HIH6130/6131 and HIH6120/6121 Series sensors use a
laser trimmed, thermoset polymer capacitive sensing
element. The element's multilayer construction provides
resistance to most application hazards such as
condensation, dust, dirt, oils, and common
environmental chemicals which help provide industry-
leading stability and reliability.
Lowest total cost solution:
Offers customers the
lowest total cost solution due to the sensor’s industry-
leading Total Error Band and its being a combined
humidity/temperature sensor.
True, temperature-compensated digital I C or SPI
output:
Typically allows the customer to remove the
components associated with signal conditioning from the
PCB to free up space and reduce costs associated with
those components (e.g., acquisition, inventory,
assembly). Often eliminates problems that could occur
from having multiple signal conditioning components
across the PCB. Simplifies integration to the
microprocessor, eliminating the need for customer-
implemented, complex signal conditioning.
Energy efficient
Low supply voltage:
Can operate down to 2.3 Vdc,
which allows use in low energy and wireless-
compatible applications to enhance energy savings
and prolong system battery life.
Low power consumption:
The sensor goes into
sleep mode when not taking a measurement within
the application, consuming only 1 µA of power versus
650 µA in full operation in a battery operated system.
Sleep mode helps maximize battery life, reduces
power supply size, and reduces the application’s
overall weight.
Ultra-small package:
SOIC-8 SMD (Surface Mount
Device) and SIP 4 Pin packages are ultra small,
including the condensation-resistant versions with
hydrophobic filter on-board (HIH6121 and HIH6131).
Allows for flexibility of use within the application,
occupies less space on the PCB, and typically simplifies
placement on crowded PCBs or in small devices.
Combined humidity and temperature sensor:
The
humidity and temperature sensors are co-located in the
same package. This allows the RH measurement to be
temperature compensated and provides a second,
standalone temperature sensor output. This allows the
user to purchase one sensor instead of two.
Tape and reel packaging:
Cost-effective tape-and-reel
packaging allows for use in high volume, automated pick-
and-place manufacturing, eliminating lead misalignment to
the PCB and helping the customer to reduce
manufacturing costs.
2
High resolution:
High 14-bit humidity sensor resolution
and 14-bit temperature sensor resolution within the
application help the user’s system detect the smallest
relative humidity or temperature change.
FEATURES AND BENEFITS
Wide operating temperature range:
-25 °C to 85 °C
[-13 °F to 185 °F] allows for use in many applications
Optional one or two %RH level alarm outputs
(HIH6130/6131 only)
:
Provide the user the ability to
monitor whether the RH level has exceeded or fallen
below pre-determined and critical levels within the
application
Multi-function ASIC:
Provides flexibility within the
application by lowering or eliminating the risk and cost of
OEM calibration
Industry-standard package:
Provides easy design-in
RoHS and WEEE compliant; halogen-free
Two configurations:
Increase flexibility of use:
HIH6120 and HIH6130: no filter, non-condensing
HIH6121 and HIH6131: hydrophobic filter and
condensation-resistant allow use in many condensing
environments
2
Optional I C or SPI digital communication formats:
Provide the user with flexibility in integrating the sensors
into existing system level architecture
POTENTIAL APPLICATIONS
HVAC/R:
May be used to provide precision RH and
temperature measurement in air conditioning/air
movement systems, enthalpy sensing, thermostats,
humidifiers/de-humidifiers, and humidistats to maintain
occupant comfort and ideal storage humidity/temperature
while achieving low energy consumption, supporting
system accuracy and warranty requirements, maximizing
system uptime, and improving overall system quality.
Respiratory therapy:
May be used to provide precision
RH and temperature measurement in sleep apnea
machines and ventilators, enhancing patient comfort,
safety and treatment effectiveness with warm and
humidified air.
Incubators/microenvironments:
May be used to provide
optimal temperature and RH levels to support critical
processes and experiments, enhancing process efficiency
with desired climate conditions.
Air compressors:
May be used to provide precision RH
measurement in compressed air lines, allowing the system
to remove any condensation; dry compressed air is critical
for customer process control measurement.
Weather stations:
May be used to provide precision RH
and temperature measurement in ground-based and air-
born weather stations, allowing real time and highly
accurate monitoring/reporting of actual weather conditions.
Telecom cabinets:
May be used to provide precision RH
and temperature measurement in the telecom cabinet
HVAC system; maintaining proper temperature and
humidity levels in the cabinet provides maximum system
uptime and performance.
2
www.honeywell.com/sensing
HIH6130/6131 and HIH6120/6121 Series
Table 1. Environmental Specifications
Characteristic
Operating temperature range
Storage temperature range
Storage humidity
Soldering:
automated
manual
ESD
Latch-up immunity
Shock
Condition
Min.
-25 [-13]
-40 [-40]
30
Typ.
Max.
85[185]
85[185]
50
Unit
C [ F]
C [ F]
%RH
C [ F]
kV
mA
g
g
Vibration
Light sensitivity
IPC/EIA/JEDEC J-STD-020D
260 [500]
apply heat for 4 s max. for manual soldering
350 [662]
4
MIL-STD 883H, Method 3015.7
–
–
100
–
–
–
MIL-STD 202G, Method 213D, Test Condition C,
half-sine, 6 ms 3 perpendicular axis, 3 shock
–
–
100
pulses per axis
MIL-STD 202G, Method 204D, Test Condition D,
–
–
20
10 Hz to 2000 Hz
exposed to 50 lumens yellow light; exhibited no change in output
Table 2. Humidity Performance Specifications
Characteristic
Condition
Min.
Supply voltage variation
2.3 Vdc to 5.5 Vdc
–
1
Compensated humidity range
–
10
1
Compensated temp. range
–
5 [41]
Resolution
14 bit ADC resolution
–
2
Accuracy
–
–
3
Total error band
–
–
Response time
airflow minimum 20 l/min
–
Operating range
non-condensing
0
Long term stability
50 %RH for 5 years
–
Impact of soldering
IPC/EIA/JEDEC J-STD-020D, peak temp. of
–
260 C [500 F]
Notes:
1. Conversion formulas:
14 bit ADC output for temperature
14 bit ADC output for humidity to %RH:
Humidity RH)
(%
Humidity_ 14 _ bit _ ADC _output
100
2
14
2
Temperatur ( C)
e
Typ.
0.1
–
–
–
–
–
6
–
0.05
–
Max.
0.5
90
50 [122]
0.04
4
5
8
100
1.2
2.5
Unit
%RH
%RH
C [ F]
%RH
%RH
%RH
s
%RH
%RH
%RH
conversion to C:
Temperatur _ 14 _ bit _ ADC _output
e
165 40
2
14
2
2. Accuracy is specified at the typical supply voltage of 3.3 Vdc and at 25 °C [77 °F]. It is the maximum deviation from the ideal
transfer function of relative humidity measured over the humidity range of 10 %RH to 90 %RH and includes all errors due to
humidity non-linearity, humidity hysteresis and humidity non-repeatability.
3. Total error band is the maximum deviation from the ideal transfer function of relative humidity over the compensated range of
5 °C [41 °F] to 50 °C [122 °F]. It includes all errors due to humidity non-linearity, humidity hysteresis, humidity non-repeatability,
thermal effect on zero, thermal effect on span and thermal hysteresis.
Honeywell Sensing and Control
3
Honeywell HumidIcon™ Digital Humidity/Temperature Sensors
Table 3. Temperature Performance Specifications
Characteristic
Supply voltage variation
Compensated temp. range
Resolution
Accuracy (BFSL)
1
Response time
Long term stability
Impact of soldering
Condition
2.3 Vdc to 5.5 Vdc
–
14 bit ADC resolution
–
1/e slow moving air
25 °C for 5 years
IPC/EIA/JEDEC J-STD-020D, peak temp.
of 260 C [500 F]
Min.
–
5 [41]
–
–
5
–
–
Typ.
0.5
–
–
–
–
–
–
Max.
1.0
50 [122]
0.025
±1.0
30
0.05
±0.1
Unit
°C
°C [°F]
°C
°C
s
°C/yr
°C
Note:
1. Accuracy is specified over the compensated temperature range.
Table 4. Current Consumption
Characteristic
Sleep current
Supply current:
2
IC
SPI
V
DD
3.3
3.3
3.3
Abbr.
I
SLEEP
I
DD
I
DD
Condition
–
14 bit fastest update, no sleep
14 bit fastest update, no sleep
Typ.
0.6
0.65
0.75
Max.
1
1
1
Unit
µA
mA
mA
Table 5. Input and Output Characteristics
Characteristic
Abbr.
Supply voltage
V
DD
Low level output voltage
V
OL
High level output voltage
V
OH
Low level input voltage
V
IL
High level input voltage
V
IH
Pull-up resistor:
2
IC
R
P
SPI (for SS only)
R
SS
Table 6. Measurement Timing
Characteristic
Start-up time (Power-On to data
ready)
Update rate
Condition
–
I
OL
= 2.8 mA min.
I
OH
= -2.8 mA min.
–
–
–
–
Min.
2.3
–
80%
–
80%
–
–
Typ.
3.3
–
–
–
–
2.2
10
Max.
5.5
20%
–
20%
–
–
–
Unit
Vdc
V
DD
V
DD
V
DD
V
DD
kOhm
kOhm
Abbr.
T
STA
Condition
Min.
Typ.
Max.
Unit
14 bit TH and 14 bit humidity
–
50
60
ms
resolution
application dependent: measurements are taken only when the application requests them
4
www.honeywell.com/sensing
HIH6130/6131 and HIH6120/6121 Series
Figure 2. I C Timing Diagram
2
SDA
t
LOW
t
SUDAT
t
HDSTA
t
BUS
SCL
t
HDSTA
t
HDDAT
t
HIGH
t
SUSTA
Min.
100
0.1
0.6
0.6
0.1
0
0.1
0.1
1
Typ.
–
–
–
–
–
–
–
–
–
t
SUSTO
Max.
400
–
–
–
–
0.5
–
–
–
Unit
kHz
µs
µs
µs
µs
µs
µs
µs
µs
Characteristic
Abbr.
SCL clock frequency
F
SCL
Start condition hold time relative to SCL edge
t
HDSTA
1
Minimum SCL clock low width
t
LOW
1
Minimum SCL clock high width
t
HIGH
Start condition setup time relative to SCL edge
t
SUSTA
Data hold time on SDA relative to SCL edge
t
HDDAT
Data setup time on SDA relative to SCL edge
t
SUDAT
Stop condition setup time on SCL
t
SUSTO
Bus free time between stop and start condition
t
BUS
Note 1:
Combined low and high widths must equal or exceed minimum SCL period.
Figure 3. SPI Timing Diagram
t
HDSS
SCLK
t
HIGH
t
LOW
MISO
HiZ
t
CLKD
SS
t
CLKD
HiZ
t
SUSS
t
BUS
Min.
50
2.5
0.6
0.6
0
0.1
2
Typ.
Max.
800
Unit
kHz
μs
μs
μs
μs
μs
μs
Characteristic
Abbr.
SCLK clock frequency
f
SCL
SS drop to first clock edge
t
HDSS
1
Minimum SCLK clock low width
t
LOW
1
Minimum SCLK clock high width
t
HIGH
Clock edge to data transition
t
CLKD
Rise of SS relative to last clock edge
t
SUSS
Bus free time between rise and fall of SS
t
BUS
Note 1:
Combined low and high widths must equal or exceed minimum SCLK period.
0.5
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5
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